CAMRT Radiography Practice Exam

The assertion that a CT scan of the head must be done as soon as possible is correct because timely imaging is crucial in the evaluation and management of a stroke. In emergency situations, particularly with potential stroke patients, rapid assessment can significantly impact treatment decisions, such as whether to administer thrombolysis. A CT scan is typically the first imaging modality used because it is widely available, quick to perform, and highly effective in identifying hemorrhagic strokes, which is essential for determining the appropriate course of action.

In the case of strokes, utilizing a CT scan promptly helps differentiate between ischemic and hemorrhagic strokes, allowing healthcare providers to initiate treatment as soon as possible—which is vital given the time-sensitive nature of stroke interventions. While unenhanced CT provides important early information, it is not sufficient for comprehensive management alone, as it may not detect certain types of ischemic strokes immediately or differentiate other conditions. MRI is not routinely required to rule out a stroke in the acute setting due to longer acquisition times and lower availability compared to CT scans. Hence, prompt CT imaging remains the standard protocol in emergency departments for suspected stroke cases.